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165
Communication operation and setting
4
PARAMETERS
(2) PU connector communication system configuration
zConnection of a computer to the drive unit (1:1 connection)
zCombination of computer and multiple drive units (1:n connection)
* The drive units may be affected by reflection depending on the transmission speed or transmission distance. If this reflection hinders communication, provide a
terminating resistor. If the PU connector is used to make a connection, use a distributor since a terminating resistor cannot be fitted. Connect the terminating
resistor to only the drive unit remotest from the computer. (Terminating resistor: 100Ω)
REMARKS
Computer-drive unit connection cable
Refer to page 274 for the connection cable (RS232CRS485 converter) between the computer with RS-232C interface and an
drive unit.
Refer to page 274 to make your own cable.
PU
connector
Drive unit
Station 0
Computer
RS-485
interface/terminals
Communication cable
PU
connector
Drive unit
FR-PU07
Communication cable
PU
connector
Drive unit
Station 0
Computer
Communication cable
RS-232C
connector
RS-232C RS-485
converter
RS-232C
cable
Maximum
15m
RJ-45 connector
RJ-45
connector
RJ-45
connector
Computer
Terminating resistor *
RS-232C
Connector
RS-232C
cable
Maximum
15m
Drive unit
Station 0
Computer
Terminating resistor *
PU
connector
PU
connector
PU
connector
PU
connector
PU
connector
PU
connector
Communication cable
Distributor
Distributor
Drive unit
Station 1
Drive unit
Station n
(max. 32 drive unit)
Drive unit
Station 1
Drive unit
Station 2
Drive unit
Station n
Communication cable
RS-485
interface/terminals
RS-232C RS-485
converter
RJ-45 connector
RJ-45 connector